Software Development Engineer II

LivePerson is a leader in trusted enterprise conversational AI and digital transformation, providing innovative solutions for customer interactions. The Software Development Engineer II will contribute to building the Syntrix Core platform, focusing on AI-driven simulations and backend services in a collaborative environment.

Responsibilities:

• Learn new technologies and architectures, including work with uniform data layers, integrations with contact center providers, and new product development
• Work with leadership to bring your engineering experience to the table and ideate new features and functionality
• Design, build, and maintain Python-based backend services that orchestrate AI agent workflows using LangChain and LangGraph
• Contribute to the development of a multi-tenant simulation platform handling high volumes of concurrent AI-driven conversations in a public cloud environment
• Integrate with contact center providers (such as LivePerson) and external LLM providers through a unified gateway abstraction
• Build and extend REST APIs using the Litestar framework, following strong typing and Pydantic-based data modeling patterns
• Work with Couchbase for conversation state persistence, implementing optimistic concurrency patterns (CAS locking) for correctness in multi-pod deployments
• Write high-quality, well-tested code with a focus on behavior-driven unit and integration testing

Requirements:

• Bachelor's degree in Computer Science or related field
• 4+ years of software development experience
• Strong proficiency in Python, including async/await patterns, type annotations, and familiarity with the Python ecosystem (uv, ruff, mypy)
• 3+ years of experience building microservices, RESTful APIs, and production backend systems deployed to Kubernetes
• Experience with Couchbase, PostgreSQL, Firestore, or other NoSQL/document databases
• Familiarity with Kafka
• Experience with Docker and Kubernetes for containerized, cloud-native deployments
• Strong understanding of distributed systems, including optimistic concurrency, idempotency, and stateless service design
• Solid understanding of data structures, algorithm design, and object-oriented principles
• Experience with Git and modern CI/CD workflows (GitLab CI preferred)
• Analytical and problem-solving skills with a customer-centric mindset
• Advocating and executing on automated testing strategies across all developed code
• Experience with AI/ML frameworks or LLM application development — LangChain, LangGraph, or similar agent orchestration tools are a strong plus
• Experience with Pydantic and Litestar (or FastAPI/Starlette)
• Familiarity with LLM providers: Anthropic Claude, OpenAI GPT, Google VertexAI